LightWrap: A Wrap Without the Precomp

For those who don’t know the tool: LightWrap is Vankul’s plugin for After Effects, designed to blend a foreground into its background by wrapping background light and colour around the edges. Apply it to the foreground, select the background layer and keep working in the same comp.

A little less precomp archaeology

Light wrap is one of those finishing touches that attracts very little applause when it works. The foreground simply looks as though it belongs. Get carried away, however, and your subject acquires the unmistakable aura of someone being gently microwaved. Restraint remains an artist-operated feature.

LightWrap’s useful trick is removing the precomposing step. Foreground animation, scaling and background changes remain live, with the wrap following along. It is a small convenience, and small conveniences deserve a little affection. Especially when the alternative is opening another nested comp and trying to remember which past version of yourself thought the naming made sense.

Wrap, with a few knobs attached

The alpha channel defines the edges. Radius, Width and BG Blur shape the wrap; luma weighting adds a tolerance control. Seven blend modes cover Normal, Screen, Add, Lighten, Soft Light, Overlay and Multiply. Background saturation, exposure and tint can be adjusted before wrapping.

A directional gate limits the effect to an arc, while optional glow has separate inside and outside falloff. Footage, live text and shapes are supported. Version 1.1.0 adds Final Result, Light Wrap Only and Light Wrap on Black outputs. Isolating the contribution is useful for checking what you have actually added, before deciding that another helping of glow will surely fix the shot.

This sits after the keying work, in the familiar territory of compositing polish. A convenient edge treatment is a welcome tool to have within reach; the temptation to turn every edge into a light source is entirely our own contribution.

The camera needs to exist

LightWrap supports 8-, 16- and 32-bit processing, Smart Render, track mattes, Time Remap and motion blur. GPU acceleration uses CUDA on Windows and Metal on macOS, with CPU fallback. In 3D comps, add an actual Camera layer: the default camera can cause an offset. Test that setup on a representative shot before committing.

Available through aescripts for $35, with trial downloads for both platforms. It requires After Effects 2024 or later. A modest helper for a specific job, then. No need to wrap an entire production philosophy around it. We have already used quite enough wrap for one news item.